Christensen, Ole C., and Niels Søndergaard. 1. Maj MysterietTitle trans.:The May 1 MysteryWhat if: Denmark had a communist revolution c. 1920.Summary: A Danish scientist discovers travel between different worlds and
invites some of his "doubles" to an informal congress, at which one is murdered.Series note: First story of the Dimensionsdetektiven.Published: Carlsen Comics 1991 (8756252862).Original in: Danish.Translation: Norwegian as 1. mai mysteriet, Carlsen 1992.Translation: German as Der Rätselhafte 1. Mai, Carlsen 1992.

Christensen, Ole C., and Niels Søndergaard. Den Anden PræsidentTitle trans.:The Second PresidentWhat if: Several European states entered the USA c. 1910, making it the United
States of the Free World (USFW).Summary: A coup d'etat is plotted against the president, traveling to his home
state of Denmark to inaugurate the new, 125-meter statue of "The Great
Mermaid" in Copenhagen.Series note: Second story of the Dimensionsdetektiven.Published: Carlsen Comics 1993 (8756260725).Original in: Danish.Translation: German as Der Falsche Präsident, Carlsen 1993.

Christensen, Ole C., and Niels Søndergaard. Det tredje øjeTitle trans.:The Third EyeDivergence: 1941 CEWhat if: Germany did not invade the Soviet Union in 1941, and the Axis won a
smaller-scale World War II.Summary: The divided city of Copenhagen becomes a "Singapore with Berlin walls"
as the Axis powers fall out. Tensions rise 50 years later as the city
reunites with German-occupied Denmark.Series note: Third story of the Dimensionsdetektiven.Published: Carlsen Comics 2001 (8756262728).Original in: Danish.